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Pistons should be chemically cleaned while assembled to the piston pin and connecting rod.
Substances
Materials or compounds that have a distinct physical presence and chemical composition.
Resident Normal Flora
Bacteria, fungi, and protozoa that have taken up residence either in or on the human body. Some of these organisms neither help nor harm the host and some are beneficial, creating a barrier against pathogens.
Pathogenic
Capable of causing disease when introduced into the body.
Infections
The invasion and multiplication of microorganisms such as bacteria, viruses, and parasites that are not normally present within the body and may cause disease or illness.
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